Concept Duel Concepts in Japan For May 25th, June 22nd and July 27th
Mutou, Yuugi (A): Your Main Deck must include 10 cards from among the following choices: “Dark Magician” related cards, “Gaia the Fierce Knight” related cards, “Kuriboh”, “Black Luster Soldier” or “Slifer the Sky Dragon”.
Mutou, Yuugi (B): Your Main Deck must include 8 cards from among the following choices: “Magnet Warrior” cards, “King’s Knight”, “Jack’s Knight” and “Queen’s Knight”.
Seto Kaiba: Your Main Deck must include 10 or more cards from among the following choices: “Blue-Eyes White Dragon” related cards, “XYZ-Dragon Cannon” related cards, or “Obelisk the Tormentor”.
Jounouchi, Katsuya: Include 8 or more of these cards: Includng at least 1 “Red-Eyes B. Dragon”, “Jinzo”, “Scapegoat” or a card that mentions “Coins” or “Dice”.
Pegasus J. Crawford: Include 10 or more “Toon” (トゥーン) named Cards (Including Mana Ryu-Ran) in your Main Deck.
Kujaku, Mai: 15 or more “Harpie” and/or “Amazoness” cards included in your Main Deck.
Marik: Include 15 or more cards dealing with Effect Damage in your Main Deck (However you must include 3″Lava Golem” or “Nightmare Wheel” among them, and at least 1 copy of “The Winged Dragon of Ra” in your Main Deck.)
Bakura: Include 5 or more cards in your Main Deck whose names include “Destiny Board” and/or “Spirit Message”.
Yuuki, Juudai: Include 10 or more “Elemental HERO” cards in your Main Deck, but you must have at least 5 different “Elemental HERO” cards in said Main Deck. (You cannot use Xyz Monsters in your Extra Deck.)
Marufuji, Ryou: Include 10 or more “Cyber” (サイバー) cards in your Main Deck.
Johan Andersen: Include 15 or more “Crystal” (宝玉) cards in your Main Deck.
Edo Phoenix: Include 8 or more “Destiny HERO” cards in your Main Deck.
Manjoume Jun: 10 or more “Ojama” cards in your Main Deck.
Yubel: Include 5 or more “Yubel” cards in your Main Deck, but you must have at least 3 or more different “Yubel” cards in said Main Deck.
Fudou Yusei: Include 8 or more different cards in your Main Deck, from the following list: “Junk”, “Synchron” or “Warrior” (ウォリアー).
Jack Atlus: Include 5 or more “Resonator” cards in your Main Deck, and your Extra Deckmust include 1 or more “Red Dragon Archfiend” or “Red Nova Dragon”.
Crow Hogan: Include 8 or more different “Blackwing” cards in your Main and/or Extra Deck.
Izayoi, Aki: Include 10 or more Plant-Type monsters in your Main Deck (you must include 5 or more “Rose” (薔薇 or ローズ) cards among them) and your Extra Deck must include at least 1 “Black Rose Dragon” or “Stardust Dragon”.
Rua: Include 15 or more “Morphtronic” cards in your Main Deck.
Rua: Include 10 or more cards in your Main Deck from the following choices: “Kuribon”, “Regulus”, “Ancient Forest”, along with cards whose names include “Pixie” (ピクシー) and/or “Fairy” ( 妖精).
Tsukumo Yuma: Include 10 or more cards whose names include “Zubaba”, “Gagaga”, “Gogogo” or “Dododo”, and the only cards you can include in your Extra Deck are “Number” cards.
Kamishiro, Ryouga: Include 8 or more “Shark” (シャーク) cards in your Main and/or Extra Deck, and your Main Deck must include at least 1 copy of “Aqua Jet”.
Tenjou Kaito: Your Main and/or Extra Deck combined must include 25 or more cards whose names include “Galaxy” (銀河) or “Photon”, your Main Deck must include at least 1 copy of “Orbital 7” and your Extra Deck cannot include “Constellar Pleiades” or “Divine Dragon Knight Felgrand”.)
IV: Include 10 or more “Gimmick Puppet” cards in your Main Deck.
III: Include 12 different “Chronomaly” cards in your Main and/or Extra Deck. (You cannot use “Constellar Pleiades” in your Extra Deck.)
Kamishiro, Rio: Include 8 or more WATER Winged Beast-Type cards in your Main and Extra Deck.
Alito: Your Main and Extra Decks can only include “Battlin’ Boxer” or “Number 80” cards, and your your Main Deck MUST contain at least 3 copies of “Jolt Counter” and 3 copies of “Last Counter”.
Girag: Include 8 or more “Hand” (ハンド) cards with 6 or more different names in your Main and/or Extra Deck, also your Extra Deck can only contain Number 101~107 Cards.
Mizael: You must include 10 or more cards, chosen from the following list: “Schwarzchild Limit Dragon”, “Parsec the Interstellar Dragon”, “Radius the Half-Moon Dragon” or “Heliosphere the Supreme Shield Dragon”, also your Extra Deck can only contain Number 101~107 Cards.
Vector: Include 10 or more “Umbral Horror” cards in your Main Deck
Durbe: Include 10 or more “Star Seraph” cards in your Main Deck, and your Extra Deck can only contain Number 101~107 Cards.
Sakaki, Yuya: Include 8 or more “Entermate” monsters in your Main Deck.
Gongenzaka, Noboru: Include 8 or more “Heavyweight Samurai” (超重武者) cards in your Main Deck.
Hiiragi, Yuzu: Include 8 or more “Fantasia” (幻奏の) cards in your Main Deck.
The Following Cards are Forbidden in these events:
– “Left Leg of the Forbidden One”
– “Right Armof the Forbidden One”
– “Exodia the Forbidden One”
in addition to the normal Limit Regulations.
Related Cards is a very loose concept, and you shoudn’t worry to much about it since YGO Day is for fun. For example, “Dark Magician of Chaos” would count as a “Dark Magician” related card.
Also, rthe above concepts can be changed and new concepts can and will be added at any time without warning.
Source: Konami’s Official Japanese Website